基于多脉搏波参数的人体血压检测的研究  

Research on the Method of Blood Pressure Monitoring Based on Multiple Parameters of Pulse Wave

作　　者：苗长云[1] 穆殿伟 张诚[1] 苗春浇[2] 李鸿强[1] 

机构地区：[1]天津工业大学电子与信息工程学院,天津300387 [2]北京交通大学电子信息工程学院,北京100044

出　　处：《生物医学工程学杂志》2015年第5期1113-1117,共5页Journal of Biomedical Engineering

基　　金：国家自然科学基金资助项目(61177078;61307094);天津市应用基础与前沿技术研究计划资助项目(13JCYBJC16800)

摘　　要：为了提高可穿戴设备中血压测量的准确性,本文提出了一种基于多脉搏波参数的人体血压检测方法,该方法通过对脉搏传输时间(PWTT)、每搏心输出量、波形系数、升支平均斜率、脉率等多脉搏波参数的多元线性回归分析,建立了基于多脉搏波参数的人体血压计算模型,利用该模型计算出血压值;以心音信号为参考计算PWTT(PWTTPCG),克服了以心电信号为参考计算PWTT(PWTTECG)需要更换电极、有导连线穿戴不方便的不足。分别对基于PWTTPCG和多脉搏波参数的人体血压计算模型计算血压进行了实验验证,实验结果表明利用PWTTPCG作为PWTT计算人体血压的可行性;利用该模型计算的收缩压和舒张压的平均误差分别为1.62 mm Hg和1.12mm Hg,较单一参数分别提高了57%和53%,具有较高的测量精度。In order to improve the accuracy of blood pressure measurement in wearable devices, this paper presents a method for detecting blood pressure based on multiple parameters of pulse wave. Based on regression analysis be- tween blood pressure and the characteristic parameters of pulse wave, such as the pulse wave transit time （PWTT）, cardiac output, coefficient of pulse wave, the average slope of the ascending branch, heart rate, etc. we established a model to calculate blood pressure. For overcoming the application deficiencies caused by measuring ECG in weara- ble device, such as replacing electrodes and ECG lead sets which are not convenient, we calculated the PWTT with heart sound as reference （PWTT_PCG）. We experimentally verified the detection of blood pressure based on PWTT_PCG and based on multiple parameters of pulse wave. The experiment results showed that it was feasible to calculate the PWTT from PWTT_PCG. The mean measurement error of the systolic and diastolic blood pressure calculated by the model based on multiple parameters of pulse wave is 1.62 mm Hg and 1.12 mm Hg, increased by 57% and 53% compared to those of the model based on simple parameter. This method has more measurement accuracy.

关 键 词：血压检测 多脉搏波参数 心音信号 人体血压计算模型 可穿戴设备 

分 类 号：R318[医药卫生—生物医学工程]